Note:  Do not rely on this information. It is very old.


Clavicle, or Collar Bone. Fracture of this bone is not uncommon as the result of a fall on the shoulder or hand. The collar-bone, forming the only direct bony connection of the upper extremity with the trunk, is exposed to especial danger under such conditions. The two ends of the bone readily unite, though there is often some disfigurement, the parts being so difficult to keep in apposition. Dislocation of the clavicle is a rare form of injury.